<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script>
					
					
					window.onload = function()
					{
						console.log("页面加载完成了")
						
						// 通过document可以访问网页内容
						console.log(document.title)
						// document.title = "O(∩_∩)O哈哈~"
						
						var i = 0;
						// setInerval(定时要执行的代码,时间的间隔)
						setInterval(function()
						{
							if(i==0)
							{
								document.title = "O(∩_∩)O哈哈~"
								i=1
							}
							else 
							{
								document.title = "O(∩_∩)O嘿嘿~"
								i=0
							}
						},1000)
					}
					
					
				</script>
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</html>